B33113313132313113313223313331323133313223313231333133311221123232233132312111   >>    B3311331313231311331322331333132313331322331323133313331122112323223313231211   <<    B33113313132313113313223313331323133313223313231333133311221123232233132312113   >>      B33113313132313113313223313331323133313223313231333133311221123232233132312112   >>